This section is from the book "The Standard Cyclopedia Of Horticulture Vol2", by L. H. Bailey. See also: Western Garden Book: More than 8,000 Plants - The Right Plants for Your Climate - Tips from Western Garden Experts.
(Greek mythological name). Written also Callirrhoe. Malvaceae. Hardy showy herbs, for outdoor planting.
Perennials or annuals: leaves alternate, with lobed or cleft blades or more finely dissected: flowers showy, axillary or sometimes in terminal racemes, the petals irregularly cut at the apex or truncate, differing in this from the notched petals of Malva; involucel of 1-3 bracts, or wanting. - Nine species, native.
The callirhoes are of the easiest culture, and deserving of a much greater popularity. They are chiefly propagated by seeds, but the perennial species may also be propagated by cuttings.
Gray. Fig. 744. Height 1-3 ft.: stem erect, leafy: radical and lower leaves round-cordate, palmately or pedately 5-7-lobed or -parted, the lobes coarsely toothed or incised, upper 3-5-cleft or -parted, usually into narrow divisions: flowers red-purple, cherry-red, varying to lilac. On plains and in sand, S. U. S., spring and summer. R.H. 1857, p. 430.
Fig. 744. Callirhoe pedata.
a. Annual: involucel absent.
aa. Perennial: involucel present. involucrata, Gray. Height 9-12 in., plant hirsute or even hispid: root large, napiform: stems procumbent: leaves of rounded outline, palmately or pedately 5-7-parted or -cleft, the divisions mostly wedge-shaped, incised, the lobes oblong to lanceolate: flowers crimson-purple, cherry-red or paler. All summer. Minn. to Texas. R.H. 1862:171 (as C. verticillata).
Variety lineariloba, Gray (C. lineariloba, Gray). Less hirsute than the type: stems ascending: leaves smaller, 1-2 in. across, the upper or all dissected into linear lobes: flowers lilac or pinkish. Texas and adjacent Mex. - An excellent trailer, especially for rockeries. Thrives even in very dry soils, the root penetrating to a great depth. A sunny position is preferable.
C. Papaver, Gray. A perennial decumbent or ascending plant with 3-5-lobed or -parted leaves and involucrate purple-red flowers S.U.S. -Useful for very dry sandy places. N. Taylor.†